Napping-machine.



No. 643,247; Patnted Feb. l3, I900. n. sassmzn. NAPPING MACHINE.

(Application filed Oct. 8, 1891.)

4 Sheets-Sheet I.

(No Model.)

THE ucams PEYERs co.. moraurua. wAsmnumw, n c

No. 643,247. Patented Feb. [3, i900. D..GESSNER.

NAPPING MACHINE.

(Application filed Oct. 8, 1891.)

(No Model.) 1 4 Sheets-Sheet 2.

THE poms PETERS 00.. PNDTO-LITHO., wnswnurou. n cy No. 643,247. Patented Feb. l3, I900. D. GESSNER.

NAPPING MACHINE (Application filed Oct. 8, 1891.) (No Model.) 4 Sheets Sheet 3.

STATES PATENT OFFICE.

DAVID GESSNER, WORCESTER, MASSACHUSETTS.

NAPPlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 643,247, dated February 13, 1900.

Application filed October 8, 1891. Serial No. 408,196. (No model.)

- Worcester,in the State of Massachusetts,have

invented a new and useful Improvement in Napping-Machines, of which the following is a specification.

Figures 1 and 2 are perspective views of opposite ends of the machine. Fig. 3 is a detail showing the napping-rollers and the means immediately concerned in driving them. Fig. 4. is a further detail. Figs. 5 and 6 are details of two modifications. Fig. 7 is a revolving stretcher. Fig. 8 is a stretcher-bar. Fig. 9 is a detail of a modification. Fig. 10 is a detail of a spring for taking up the slack of loose listings.

at is the main frame of the machine,in which is journaled the main shaft b.

c and c are the heads fixed to the shaft, upon the peripheries of which are the bearings for the shafts of the napping-rollers.

d is a friction-disk fixed on the end of the main shaft, presenting a depressed conical surface.

e is a conical roller cooperating with the disk through the interposed endless belt f, by the axial adjustment of which.belt the relative speed between the disk (1 and the roller e may be controlled.

9 is the vertical shaft upon which the roller e is fixed and which shaft is geared to the shaft h.

t is a chain by which motion is transmitted from the shaft h to a sprocket-wheel t".

j is an arm to which the sprocket-Wheel t" is fixed and which has a bearing upon the main shaft, upon which it is free to revolve.

j is a counterbalance projection corresponding with the arm j on the opposite side of the shaft.

70 is a belt extending around the series of pulleys 7c of the napping-rollers. At its ends the belt passes around the steel pins 70 and 70 projecting from the face of the arm j. Each end of the belt then returns upon itself, and one extremity is fastened to the T-piece k and the other extremity is fastened to the T-piece 70 The opposite end of each of these T-pieces extends througha lug 70 k cast upon the arm j and projecting over the teazeling-roller pulleys. Upon the extremities of the T-pieces 70 and 70 are fixed nuts,

as shown, bytightening which the belt tension can be regulated. There is a belt and attendant mechanism, as just described, at each end of the napping-rollers.

I designate 7c as a belt for convenience of expression; but I do not wish to be understood that it is necessarily flexible or that it may not be in sections.

Suitable draft-rolls 'n, n, n n n ii and n conduct the cloth through the machine. The power for driving these rolls is transmitted from the main shaft through the cooperating stepped pulleys o the belt 0*, connecting the same, the counter-shaft 0 the gears o o 0 and another gear not visibleon the. shaft of roller 91. the roller 01 and the chains 0 0, and 0 The cloth is guided into position to be operated upon by the teazeling-rollers by the guide-rollers q to g and q", inclusive.

9 is a friction-roll. The roll n may be a stretcher-roll, as also may be the roll at. The folder 3 contains the rollers s and the latter of which is driven by the chain 8 t is a brush mounted in such position as to sweep the surface of each of the nappingrollers as it is carried by. This brush is driven from the main shaft through the belts t and i In lieu of this revolving brush, however, I may employ a brush i fixed inside of each napping-roller on the heads 0 and c, as shown in Fig. 3. the direction of the arrow, Fig. 3, the wires of their clothing and also of the brushes are preferably inclined. In some cases it may be considered desirable to locate the nappingrollers at different distances from the center of the main shaft, as shown in Fig. 5, those having their centers in a circle of one diame ter alternating with those having their centers in a circle of greater diameter. In this case the brush may be arranged, as shown in Fig. 5, to sweep the surfaces of those napping-rollers in the circle of greater diameter, and for each of the napping-rollers in the circle of lesser diameter a brush, as may be fixed upon the heads a and c in a position between the napping-rollers.

Thus far in this description the provisions for stretching have been exclusively before and after the commencement of the napping operations; but as another feature of my im- The napping-rollers revolving'in I provement I have devised means whereby the cloth is stretched during the napping operation and in such proximity to the lines at. which the napping is being carried on that the stretching tension is, in fact, maintained at the instant that the napping takes place. Two constructions for embodying this principle are shown in Fig. 6, one of which constructions consists in the interposing of a rotary stretcher, as a, between every two couples of napping-rollers. The other construction consists in the interposing in a corresponding position of stationary stretcherbars 1B. In each case, whether a stationary stretcher-bar or a rotary stretcher-roll is employed, the surface is composed, as shown in Figs. 7 and 8, of lines or strips of wire diverging in the direction in which the cloth travels from the middle of the bar or roll, as the case may be, this being a well-known device for stretching.

The stretcher bars or rolls, as the case may be, are mounted upon the periphery of the heads 0 and c, and in the case of the stretcherroll it is driven bysuitable gearing or by a belt around the pulleys a and another pulley connected with any moving part of the machine productive of a fast speed.

If desired, the brush already described as being interposed between the nappingrollers, may be mounted upon the stretcherbar last referred to, such construction being shown at t in Fig. 5. Another construction adapted for producing stretch during the napping operation is shown in Fig 9, where the guide-rollers a are constructed in the form of stretch-rolls. In this case the stretcher guide-rolls must be driven, and this may be accomplished by the belt 10 extending around a pulley a on the main shaft (to which it is held by the idler-pulley a and around pulleys mounted upon all the guide stretch-rolls.

In the drawings I have shown the pulleys on the napping-rollers of the same diameter as the napping-rollers, and the parts for driving the belt is, that moves the pulleys, are so arranged as to drive the belt in the same direction as the rollers travel. If, however, the pulleys on the rollers are made larger than the napping-rollers, then the motion should be reversed, the belt traveling in the opposite direction to that in which the rollers travel. This would be accomplished by shifting the conical roller 6 to the opposite side of the friction-disk d or otherwise by shifting the gear between the shaft 9 and the counter-shaft h.

Difficulty is experienced in napping-machines from the fact that slackness of the cloth at the edges from loose listings interferes with the disengagement of the clothing-wire and straightens them out. To obviate this difficulty, I place upon the stretcher roll uor bar 10 as the case may be, any required number of the devices shown in Fig. 10. The surface of the roll or bar is recessed, and within the recess is placed a spring a the free end of which tends toproject above the surface of the roll or bar. When the listing is tight, this spring will be pressed down flush with the surface of the bar or roll; but when the listing is loose the spring will rise above the surface and hold the listing tight. The dotted lines in Fig. 9 indicate where this device may be applied for the same purpose to the feed-rolls u.

I claim 1. In a cloth-napping machine, in combination, a series of napping-rollers, a series of devices for spreading the cloth and mechanism whereby said two series are moved around a common center, substantially as described.

2. In a cloth-napping machine, in combination, a series of napping-rollers, a series of stretchingrollers, mechanism whereby said two series are moved around a common center and mechanism whereby the individual rolls of said two series are driven upon their own axes, substantially as described.

3. In a cloth-napping machine, in combination, a series of napping-rollers, a series of devices for spreading the cloth, mechanism wherebysaid two series are moved around a common center; the members of the series of devices for spreading the cloth being distributed in the series of nappers, substantially as described.

4:. In a cloth-napping machine, in combination, a series of napping-rollers, a series of pulleys connecting therewith, abelt whereby the same are driven, the head upon which said napping-rollers are journaled, the shaft, an arm centered upon said shaft and projections rigidly fixed to said arm in contact with which the ends of the belt are held, substantially as described.

5. In a cloth-napping machine, in combination, a series ofnapping-rollers, a series of pulleys connecting therewith, a belt whereby the same are driven,the head upon which said napping-rollers are journaled, the shaft, an arm centered upon said shaft, projections rigidly fixed to said arm around which the ends of the belt are drawn and means whereby the extremity of each end is ad j ustably held, substantially as described.

6. In a cloth-nappin g machine, in combination, a series of napping-rollers, a series of pulleys connecting therewith, a belt whereby the same are driven,the head upon which said napping-rollers are journaled, the shaft, an arm centered upon said shaft, two pins rigidly affixed to said arm and overhanging the pulleys in contact with which the ends of the belt are held, substantially as described.

7. In a cloth-napping machine, in combination, a series of napping-rollers, a series of pulleys connecting therewith, a belt whereby the same are driven,the head upon which said napping-rollers are journaled, the shaft, an arm centered upon said shaft, a projection rigidly affixed to said arm in contact with which the end of the belt is drawn, a T-piece to which theextremity of the belt is secured, a projection fixed to said arm with which said T-piece engages and means whereby the position of said T-piece on said last-named projection may be adj usted, substantially as described.

8. In a cloth-napping machine, in combination, a napping-roller, the heads upon which tion, a series of napping-rollers, the heads upon which they are journaled and a series of rotary stretchers also journaled upon said heads, substantially as described.

12. In acloth-nappingmachine,in combination, a member over which the cloth passes and a spring which projects beyond the surface of said member whereby slackness in the listings is taken up,substantially as described.

13. In a cloth-napping machine,in combination, a roll over which the cloth passes and a spring which projects beyond the surface of said roll whereby slackness in the listings is taken up, substantially as described.

14. In a cloth-napping 1nachine,in combination, a napping-roller, a spring and a support whereby the pressure of said spring is applied at the listing of the cloth being treated, substantially as described.

DAVID GESSNER.

Witnesses:

FRED L. KEMPER, J. E. 

